Kernel: Move device lookup to Device class itself

Previously, VFS stored a list of all devices, and devices had to
register and unregister themselves with it. This cleans up things
a bit.

1 files changed, 7 insertions, 1 deletions

diff --git a/Kernel/Devices/Device.h b/Kernel/Devices/Device.h
index 9455d4e4a3..cf333e7404 100644
--- a/Kernel/Devices/Device.h
+++ b/Kernel/Devices/Device.h
@@ -2,13 +2,14 @@
 
 // Device is the base class of everything that lives in the /dev directory.
 //
-// All Devices will automatically register with the VFS.
 // To expose a Device to the filesystem, simply pass two unique numbers to the constructor,
 // and then mknod a file in /dev with those numbers.
 //
 // There are two main subclasses:
 //   - BlockDevice (random access)
 //   - CharacterDevice (sequential)
+#include <AK/Function.h>
+#include <AK/HashMap.h>
 #include <Kernel/FileSystem/File.h>
 #include <Kernel/UnixTypes.h>
 
@@ -28,11 +29,16 @@ public:
     virtual bool is_device() const override { return true; }
     virtual bool is_disk_device() const { return false; }
 
+    static void for_each(Function<void(Device&)>);
+    static Device* get_device(unsigned major, unsigned minor);
+
 protected:
     Device(unsigned major, unsigned minor);
     void set_uid(uid_t uid) { m_uid = uid; }
     void set_gid(gid_t gid) { m_gid = gid; }
 
+    static HashMap<u32, Device*>& all_devices();
+
 private:
     unsigned m_major { 0 };
     unsigned m_minor { 0 };